I just came across a discussion on 'best coolers' on a regional facebook page. I thought to myself about coolers/ice chest. "Why buy a better cooler." We are bad asses. We can make them better. 1: Use bungee to keep keep the lid shut tight. 2: Lift your cooler off the ground or table. Anything making contact with it will try to exchange heat (temperature). Use 4 bricks under each corners. 3: Make a shade structure. Once again leave room between anything and your cooler. Things to remember: One of the best insulators is atmosphere. Contact will exchange heat. You can use use more than one cooler. Bigger is not always better. Standing in line for ice is fun.

Jar Jar Sith Lord.Odd. No bears in the dump. Oh well, lets go across the road & pick blueberries..... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.

We kept two coolers in our hexayurt for this reason. We tried to only open the "freezer" during the night to transfer blue gel ice packs to the "fridge". Dry ice lasted in the "freezer" Saturday through Thursday and the temperature was below freezing until well into Friday.

Air is an "okay" insulator, provided it can't move heat via convection. Check out these equations and the calculator at the bottom on how much energy is being transferred into your cooler at certain values. I plugged in 5 for h_c (natural convection), an air temperature of 90 degrees, and a surface temp of 70 degrees, over 1 meter squared surface area. That results in about 100W of energy entering your cooler!

Convection is why real insulation is made up of small pockets of air and why air leaks in homes can reduce energy efficiency. You don't see homes insulated with just air after all. Convection is also why coolers with real insulation in the walls perform better than coolers with just large regions of air: the insulation prevents the air from moving heat into your stored goods.

If you want to make your ice chest actually better and DIY it, you should buy insulating paneling and make sure your cooler is air tight. Some people even try filling their cooler walls with expanding foam, but often that'll leave large gaps of air in the walls, defeating the purpose. You'll also want to restrict airflow to the exterior of the cooler; so if you elevate your cooler, ensure that it doesn't promote airflow. Putting the cooler in a shaded, sheltered location will help a bit.

"The essence of tyranny is not iron law. It is capricious law." -- Christopher Hitchens

I have always brought a Coleman 5 day cooler.. Three blokes and filled around the blokes with cube ice.. The cooler is cleaned to food grade.. The food is kept in a container away from the ice.. The cooler is then wrapped in (dollar store) windshield reflectors and a blanket, blocked up on a plywood floor.. A tube on the drain provides cold water all week.. The ice would last ten days.. This year I'm going with a Igloo drink dispenser.. With a tray on to of the ice for condiment.. Shooting for all dried foods.. 5 gallon water bottle with a hand pump.. Two 5 gallon shower bags and a 5 gallon collapsible container.. That container has been camping with me for ten years.. I have some old plastic gas cans for extra waste.

A belated welcome to ePlaya. There are lots of great tips on the boards for coolers and cooler efficiency, you may want to take a few minutes to browse some of the threads in this board (or older ones still buried deep in Q&A) for some of the things participants do to keep their stuff cool.

Foil-sided bubble-wrap provides both insulation and a radiant barrier to reflect heat away. Foil-sided fibre-re-enforced foam sheets (like used for making hexayurts) are even better. Has slightly less effective heat reflectance, but much much better insulation. Great for making a box to put your cooler in. Join & seal both materials with foil tape. viewtopic.php?f=276&t=64666#p945251

Then through the threads there's advice on how to manage cooler access through the week. As every time you open it, you're exposing the contents to hot air. So a single cooler, multiple coolers (food vs. drinks, etc.), how to package the food to keep the food clean/good and any ice-melt water uncontaminated, use only potable water for making ice-cubes, cooler-packs vs. ice vs. dry ice, etc.. As Trilobye said, search through the threads.

Jar Jar Sith Lord.Odd. No bears in the dump. Oh well, lets go across the road & pick blueberries..... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.

(even in the shade or inside a hexayurt; yes the ground is cooler than the air, but it's hotter than the cooler's contents so its still a source of heat to conduct through to the inside)

preferably with insulation under it, to keep hot air from flowing under it

NOTE: under the Burning Man Food Safety Requirement for the Temporary Food Establishment permit, it requires

Store all foods, beverages, serving containers, equipment and ice off the ground a minimum of 6 inches.

Jar Jar Sith Lord.Odd. No bears in the dump. Oh well, lets go across the road & pick blueberries..... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.